War, although dangerous and ruinous, is not the most important problem to be solved. Though it does lead to disease and poverty, it is not a big issue in America as healthcare is ready and on the go (It's called 911 and the pharmacy).

"War leads to global issues such as:
global warming
Disease"

As many of us may know, war is not the biggest cause of greenhouse gas emissions, it is cars. In America, there are sell over hundreds of millions of vehicles, and each ride emits a large amount of greenhouse gases, which then lead to global warming.
Global Warming and the rise in sea level should be our main concern as war can be repaired, our planet cannot.